Contour maps have also been referred to as isometric maps or isopleth maps. Contour maps are used to display data related to temperature or topographic information. Most of the time, contour maps are used to display maps related to geology or mountains. The contour lines represent which sections of the mountains are steeper based on how close the contour lines are drawn from each other.
We can generate a contour map in R using the
contour() function and also add a color to the contour using the
contour(volcano, main = "Topographic map of a Volcano",col = "blue") filled.contour(volcano, ...